// CodeMirror, copyright (c) by Marijn Haverbeke and others
// Distributed under an MIT license: http://codemirror.net/LICENSE

// TODO actually recognize syntax of TypeScript constructs

;(function(mod) {
    if (typeof exports == "object" && typeof module == "object")
        // CommonJS
        mod(require("../../lib/codemirror"))
    else if (typeof define == "function" && define.amd)
        // AMD
        define(["../../lib/codemirror"], mod)
    // Plain browser env
    else mod(CodeMirror)
})(function(CodeMirror) {
    "use strict"

    CodeMirror.defineMode("javascript", function(config, parserConfig) {
        var indentUnit = config.indentUnit
        var statementIndent = parserConfig.statementIndent
        var jsonldMode = parserConfig.jsonld
        var jsonMode = parserConfig.json || jsonldMode
        var isTS = parserConfig.typescript
        var wordRE = parserConfig.wordCharacters || /[\w$\xa1-\uffff]/

        // Tokenizer

        var keywords = (function() {
            function kw(type) {
                return { type: type, style: "keyword" }
            }
            var A = kw("keyword a"),
                B = kw("keyword b"),
                C = kw("keyword c")
            var operator = kw("operator"),
                atom = { type: "atom", style: "atom" }

            var jsKeywords = {
                if: kw("if"),
                while: A,
                with: A,
                else: B,
                do: B,
                try: B,
                finally: B,
                return: C,
                break: C,
                continue: C,
                new: C,
                delete: C,
                throw: C,
                debugger: C,
                var: kw("var"),
                const: kw("var"),
                let: kw("var"),
                function: kw("function"),
                catch: kw("catch"),
                for: kw("for"),
                switch: kw("switch"),
                case: kw("case"),
                default: kw("default"),
                in: operator,
                typeof: operator,
                instanceof: operator,
                true: atom,
                false: atom,
                null: atom,
                undefined: atom,
                NaN: atom,
                Infinity: atom,
                this: kw("this"),
                module: kw("module"),
                class: kw("class"),
                super: kw("atom"),
                yield: C,
                export: kw("export"),
                import: kw("import"),
                extends: C
            }

            // Extend the 'normal' keywords with the TypeScript language extensions
            if (isTS) {
                var type = { type: "variable", style: "variable-3" }
                var tsKeywords = {
                    // object-like things
                    interface: kw("interface"),
                    extends: kw("extends"),
                    constructor: kw("constructor"),

                    // scope modifiers
                    public: kw("public"),
                    private: kw("private"),
                    protected: kw("protected"),
                    static: kw("static"),

                    // types
                    string: type,
                    number: type,
                    bool: type,
                    any: type
                }

                for (var attr in tsKeywords) {
                    jsKeywords[attr] = tsKeywords[attr]
                }
            }

            return jsKeywords
        })()

        var isOperatorChar = /[+\-*&%=<>!?|~^]/
        var isJsonldKeyword = /^@(context|id|value|language|type|container|list|set|reverse|index|base|vocab|graph)"/

        function readRegexp(stream) {
            var escaped = false,
                next,
                inSet = false
            while ((next = stream.next()) != null) {
                if (!escaped) {
                    if (next == "/" && !inSet) return
                    if (next == "[") inSet = true
                    else if (inSet && next == "]") inSet = false
                }
                escaped = !escaped && next == "\\"
            }
        }

        // Used as scratch variables to communicate multiple values without
        // consing up tons of objects.
        var type, content
        function ret(tp, style, cont) {
            type = tp
            content = cont
            return style
        }
        function tokenBase(stream, state) {
            var ch = stream.next()
            if (ch == '"' || ch == "'") {
                state.tokenize = tokenString(ch)
                return state.tokenize(stream, state)
            } else if (ch == "." && stream.match(/^\d+(?:[eE][+\-]?\d+)?/)) {
                return ret("number", "number")
            } else if (ch == "." && stream.match("..")) {
                return ret("spread", "meta")
            } else if (/[\[\]{}\(\),;\:\.]/.test(ch)) {
                return ret(ch)
            } else if (ch == "=" && stream.eat(">")) {
                return ret("=>", "operator")
            } else if (ch == "0" && stream.eat(/x/i)) {
                stream.eatWhile(/[\da-f]/i)
                return ret("number", "number")
            } else if (/\d/.test(ch)) {
                stream.match(/^\d*(?:\.\d*)?(?:[eE][+\-]?\d+)?/)
                return ret("number", "number")
            } else if (ch == "/") {
                if (stream.eat("*")) {
                    state.tokenize = tokenComment
                    return tokenComment(stream, state)
                } else if (stream.eat("/")) {
                    stream.skipToEnd()
                    return ret("comment", "comment")
                } else if (
                    state.lastType == "operator" ||
                    state.lastType == "keyword c" ||
                    state.lastType == "sof" ||
                    /^[\[{}\(,;:]$/.test(state.lastType)
                ) {
                    readRegexp(stream)
                    stream.match(/^\b(([gimyu])(?![gimyu]*\2))+\b/)
                    return ret("regexp", "string-2")
                } else {
                    stream.eatWhile(isOperatorChar)
                    return ret("operator", "operator", stream.current())
                }
            } else if (ch == "`") {
                state.tokenize = tokenQuasi
                return tokenQuasi(stream, state)
            } else if (ch == "#") {
                stream.skipToEnd()
                return ret("error", "error")
            } else if (isOperatorChar.test(ch)) {
                stream.eatWhile(isOperatorChar)
                return ret("operator", "operator", stream.current())
            } else if (wordRE.test(ch)) {
                stream.eatWhile(wordRE)
                var word = stream.current(),
                    known = keywords.propertyIsEnumerable(word) && keywords[word]
                return known && state.lastType != "."
                    ? ret(known.type, known.style, word)
                    : ret("variable", "variable", word)
            }
        }

        function tokenString(quote) {
            return function(stream, state) {
                var escaped = false,
                    next
                if (jsonldMode && stream.peek() == "@" && stream.match(isJsonldKeyword)) {
                    state.tokenize = tokenBase
                    return ret("jsonld-keyword", "meta")
                }
                while ((next = stream.next()) != null) {
                    if (next == quote && !escaped) break
                    escaped = !escaped && next == "\\"
                }
                if (!escaped) state.tokenize = tokenBase
                return ret("string", "string")
            }
        }

        function tokenComment(stream, state) {
            var maybeEnd = false,
                ch
            while ((ch = stream.next())) {
                if (ch == "/" && maybeEnd) {
                    state.tokenize = tokenBase
                    break
                }
                maybeEnd = ch == "*"
            }
            return ret("comment", "comment")
        }

        function tokenQuasi(stream, state) {
            var escaped = false,
                next
            while ((next = stream.next()) != null) {
                if (!escaped && (next == "`" || (next == "$" && stream.eat("{")))) {
                    state.tokenize = tokenBase
                    break
                }
                escaped = !escaped && next == "\\"
            }
            return ret("quasi", "string-2", stream.current())
        }

        var brackets = "([{}])"
        // This is a crude lookahead trick to try and notice that we're
        // parsing the argument patterns for a fat-arrow function before we
        // actually hit the arrow token. It only works if the arrow is on
        // the same line as the arguments and there's no strange noise
        // (comments) in between. Fallback is to only notice when we hit the
        // arrow, and not declare the arguments as locals for the arrow
        // body.
        function findFatArrow(stream, state) {
            if (state.fatArrowAt) state.fatArrowAt = null
            var arrow = stream.string.indexOf("=>", stream.start)
            if (arrow < 0) return

            var depth = 0,
                sawSomething = false
            for (var pos = arrow - 1; pos >= 0; --pos) {
                var ch = stream.string.charAt(pos)
                var bracket = brackets.indexOf(ch)
                if (bracket >= 0 && bracket < 3) {
                    if (!depth) {
                        ++pos
                        break
                    }
                    if (--depth == 0) break
                } else if (bracket >= 3 && bracket < 6) {
                    ++depth
                } else if (wordRE.test(ch)) {
                    sawSomething = true
                } else if (/["'\/]/.test(ch)) {
                    return
                } else if (sawSomething && !depth) {
                    ++pos
                    break
                }
            }
            if (sawSomething && !depth) state.fatArrowAt = pos
        }

        // Parser

        var atomicTypes = {
            atom: true,
            number: true,
            variable: true,
            string: true,
            regexp: true,
            this: true,
            "jsonld-keyword": true
        }

        function JSLexical(indented, column, type, align, prev, info) {
            this.indented = indented
            this.column = column
            this.type = type
            this.prev = prev
            this.info = info
            if (align != null) this.align = align
        }

        function inScope(state, varname) {
            for (var v = state.localVars; v; v = v.next) if (v.name == varname) return true
            for (var cx = state.context; cx; cx = cx.prev) {
                for (var v = cx.vars; v; v = v.next) if (v.name == varname) return true
            }
        }

        function parseJS(state, style, type, content, stream) {
            var cc = state.cc
            // Communicate our context to the combinators.
            // (Less wasteful than consing up a hundred closures on every call.)
            cx.state = state
            cx.stream = stream
            ;(cx.marked = null), (cx.cc = cc)
            cx.style = style

            if (!state.lexical.hasOwnProperty("align")) state.lexical.align = true

            while (true) {
                var combinator = cc.length ? cc.pop() : jsonMode ? expression : statement
                if (combinator(type, content)) {
                    while (cc.length && cc[cc.length - 1].lex) cc.pop()()
                    if (cx.marked) return cx.marked
                    if (type == "variable" && inScope(state, content)) return "variable-2"
                    return style
                }
            }
        }

        // Combinator utils

        var cx = { state: null, column: null, marked: null, cc: null }
        function pass() {
            for (var i = arguments.length - 1; i >= 0; i--) cx.cc.push(arguments[i])
        }
        function cont() {
            pass.apply(null, arguments)
            return true
        }
        function register(varname) {
            function inList(list) {
                for (var v = list; v; v = v.next) if (v.name == varname) return true
                return false
            }
            var state = cx.state
            if (state.context) {
                cx.marked = "def"
                if (inList(state.localVars)) return
                state.localVars = { name: varname, next: state.localVars }
            } else {
                if (inList(state.globalVars)) return
                if (parserConfig.globalVars)
                    state.globalVars = { name: varname, next: state.globalVars }
            }
        }

        // Combinators

        var defaultVars = { name: "this", next: { name: "arguments" } }
        function pushcontext() {
            cx.state.context = { prev: cx.state.context, vars: cx.state.localVars }
            cx.state.localVars = defaultVars
        }
        function popcontext() {
            cx.state.localVars = cx.state.context.vars
            cx.state.context = cx.state.context.prev
        }
        function pushlex(type, info) {
            var result = function() {
                var state = cx.state,
                    indent = state.indented
                if (state.lexical.type == "stat") indent = state.lexical.indented
                else
                    for (
                        var outer = state.lexical;
                        outer && outer.type == ")" && outer.align;
                        outer = outer.prev
                    )
                        indent = outer.indented
                state.lexical = new JSLexical(
                    indent,
                    cx.stream.column(),
                    type,
                    null,
                    state.lexical,
                    info
                )
            }
            result.lex = true
            return result
        }
        function poplex() {
            var state = cx.state
            if (state.lexical.prev) {
                if (state.lexical.type == ")") state.indented = state.lexical.indented
                state.lexical = state.lexical.prev
            }
        }
        poplex.lex = true

        function expect(wanted) {
            function exp(type) {
                if (type == wanted) return cont()
                else if (wanted == ";") return pass()
                else return cont(exp)
            }
            return exp
        }

        function statement(type, value) {
            if (type == "var")
                return cont(pushlex("vardef", value.length), vardef, expect(";"), poplex)
            if (type == "keyword a") return cont(pushlex("form"), expression, statement, poplex)
            if (type == "keyword b") return cont(pushlex("form"), statement, poplex)
            if (type == "{") return cont(pushlex("}"), block, poplex)
            if (type == ";") return cont()
            if (type == "if") {
                if (
                    cx.state.lexical.info == "else" &&
                    cx.state.cc[cx.state.cc.length - 1] == poplex
                )
                    cx.state.cc.pop()()
                return cont(pushlex("form"), expression, statement, poplex, maybeelse)
            }
            if (type == "function") return cont(functiondef)
            if (type == "for") return cont(pushlex("form"), forspec, statement, poplex)
            if (type == "variable") return cont(pushlex("stat"), maybelabel)
            if (type == "switch")
                return cont(
                    pushlex("form"),
                    expression,
                    pushlex("}", "switch"),
                    expect("{"),
                    block,
                    poplex,
                    poplex
                )
            if (type == "case") return cont(expression, expect(":"))
            if (type == "default") return cont(expect(":"))
            if (type == "catch")
                return cont(
                    pushlex("form"),
                    pushcontext,
                    expect("("),
                    funarg,
                    expect(")"),
                    statement,
                    poplex,
                    popcontext
                )
            if (type == "module")
                return cont(pushlex("form"), pushcontext, afterModule, popcontext, poplex)
            if (type == "class") return cont(pushlex("form"), className, poplex)
            if (type == "export") return cont(pushlex("form"), afterExport, poplex)
            if (type == "import") return cont(pushlex("form"), afterImport, poplex)
            return pass(pushlex("stat"), expression, expect(";"), poplex)
        }
        function expression(type) {
            return expressionInner(type, false)
        }
        function expressionNoComma(type) {
            return expressionInner(type, true)
        }
        function expressionInner(type, noComma) {
            if (cx.state.fatArrowAt == cx.stream.start) {
                var body = noComma ? arrowBodyNoComma : arrowBody
                if (type == "(")
                    return cont(
                        pushcontext,
                        pushlex(")"),
                        commasep(pattern, ")"),
                        poplex,
                        expect("=>"),
                        body,
                        popcontext
                    )
                else if (type == "variable")
                    return pass(pushcontext, pattern, expect("=>"), body, popcontext)
            }

            var maybeop = noComma ? maybeoperatorNoComma : maybeoperatorComma
            if (atomicTypes.hasOwnProperty(type)) return cont(maybeop)
            if (type == "function") return cont(functiondef, maybeop)
            if (type == "keyword c") return cont(noComma ? maybeexpressionNoComma : maybeexpression)
            if (type == "(")
                return cont(
                    pushlex(")"),
                    maybeexpression,
                    comprehension,
                    expect(")"),
                    poplex,
                    maybeop
                )
            if (type == "operator" || type == "spread")
                return cont(noComma ? expressionNoComma : expression)
            if (type == "[") return cont(pushlex("]"), arrayLiteral, poplex, maybeop)
            if (type == "{") return contCommasep(objprop, "}", null, maybeop)
            if (type == "quasi") {
                return pass(quasi, maybeop)
            }
            return cont()
        }
        function maybeexpression(type) {
            if (type.match(/[;\}\)\],]/)) return pass()
            return pass(expression)
        }
        function maybeexpressionNoComma(type) {
            if (type.match(/[;\}\)\],]/)) return pass()
            return pass(expressionNoComma)
        }

        function maybeoperatorComma(type, value) {
            if (type == ",") return cont(expression)
            return maybeoperatorNoComma(type, value, false)
        }
        function maybeoperatorNoComma(type, value, noComma) {
            var me = noComma == false ? maybeoperatorComma : maybeoperatorNoComma
            var expr = noComma == false ? expression : expressionNoComma
            if (type == "=>")
                return cont(pushcontext, noComma ? arrowBodyNoComma : arrowBody, popcontext)
            if (type == "operator") {
                if (/\+\+|--/.test(value)) return cont(me)
                if (value == "?") return cont(expression, expect(":"), expr)
                return cont(expr)
            }
            if (type == "quasi") {
                return pass(quasi, me)
            }
            if (type == ";") return
            if (type == "(") return contCommasep(expressionNoComma, ")", "call", me)
            if (type == ".") return cont(property, me)
            if (type == "[") return cont(pushlex("]"), maybeexpression, expect("]"), poplex, me)
        }
        function quasi(type, value) {
            if (type != "quasi") return pass()
            if (value.slice(value.length - 2) != "${") return cont(quasi)
            return cont(expression, continueQuasi)
        }
        function continueQuasi(type) {
            if (type == "}") {
                cx.marked = "string-2"
                cx.state.tokenize = tokenQuasi
                return cont(quasi)
            }
        }
        function arrowBody(type) {
            findFatArrow(cx.stream, cx.state)
            return pass(type == "{" ? statement : expression)
        }
        function arrowBodyNoComma(type) {
            findFatArrow(cx.stream, cx.state)
            return pass(type == "{" ? statement : expressionNoComma)
        }
        function maybelabel(type) {
            if (type == ":") return cont(poplex, statement)
            return pass(maybeoperatorComma, expect(";"), poplex)
        }
        function property(type) {
            if (type == "variable") {
                cx.marked = "property"
                return cont()
            }
        }
        function objprop(type, value) {
            if (type == "variable" || cx.style == "keyword") {
                cx.marked = "property"
                if (value == "get" || value == "set") return cont(getterSetter)
                return cont(afterprop)
            } else if (type == "number" || type == "string") {
                cx.marked = jsonldMode ? "property" : cx.style + " property"
                return cont(afterprop)
            } else if (type == "jsonld-keyword") {
                return cont(afterprop)
            } else if (type == "[") {
                return cont(expression, expect("]"), afterprop)
            }
        }
        function getterSetter(type) {
            if (type != "variable") return pass(afterprop)
            cx.marked = "property"
            return cont(functiondef)
        }
        function afterprop(type) {
            if (type == ":") return cont(expressionNoComma)
            if (type == "(") return pass(functiondef)
        }
        function commasep(what, end) {
            function proceed(type) {
                if (type == ",") {
                    var lex = cx.state.lexical
                    if (lex.info == "call") lex.pos = (lex.pos || 0) + 1
                    return cont(what, proceed)
                }
                if (type == end) return cont()
                return cont(expect(end))
            }
            return function(type) {
                if (type == end) return cont()
                return pass(what, proceed)
            }
        }
        function contCommasep(what, end, info) {
            for (var i = 3; i < arguments.length; i++) cx.cc.push(arguments[i])
            return cont(pushlex(end, info), commasep(what, end), poplex)
        }
        function block(type) {
            if (type == "}") return cont()
            return pass(statement, block)
        }
        function maybetype(type) {
            if (isTS && type == ":") return cont(typedef)
        }
        function maybedefault(_, value) {
            if (value == "=") return cont(expressionNoComma)
        }
        function typedef(type) {
            if (type == "variable") {
                cx.marked = "variable-3"
                return cont()
            }
        }
        function vardef() {
            return pass(pattern, maybetype, maybeAssign, vardefCont)
        }
        function pattern(type, value) {
            if (type == "variable") {
                register(value)
                return cont()
            }
            if (type == "[") return contCommasep(pattern, "]")
            if (type == "{") return contCommasep(proppattern, "}")
        }
        function proppattern(type, value) {
            if (type == "variable" && !cx.stream.match(/^\s*:/, false)) {
                register(value)
                return cont(maybeAssign)
            }
            if (type == "variable") cx.marked = "property"
            return cont(expect(":"), pattern, maybeAssign)
        }
        function maybeAssign(_type, value) {
            if (value == "=") return cont(expressionNoComma)
        }
        function vardefCont(type) {
            if (type == ",") return cont(vardef)
        }
        function maybeelse(type, value) {
            if (type == "keyword b" && value == "else")
                return cont(pushlex("form", "else"), statement, poplex)
        }
        function forspec(type) {
            if (type == "(") return cont(pushlex(")"), forspec1, expect(")"), poplex)
        }
        function forspec1(type) {
            if (type == "var") return cont(vardef, expect(";"), forspec2)
            if (type == ";") return cont(forspec2)
            if (type == "variable") return cont(formaybeinof)
            return pass(expression, expect(";"), forspec2)
        }
        function formaybeinof(_type, value) {
            if (value == "in" || value == "of") {
                cx.marked = "keyword"
                return cont(expression)
            }
            return cont(maybeoperatorComma, forspec2)
        }
        function forspec2(type, value) {
            if (type == ";") return cont(forspec3)
            if (value == "in" || value == "of") {
                cx.marked = "keyword"
                return cont(expression)
            }
            return pass(expression, expect(";"), forspec3)
        }
        function forspec3(type) {
            if (type != ")") cont(expression)
        }
        function functiondef(type, value) {
            if (value == "*") {
                cx.marked = "keyword"
                return cont(functiondef)
            }
            if (type == "variable") {
                register(value)
                return cont(functiondef)
            }
            if (type == "(")
                return cont(
                    pushcontext,
                    pushlex(")"),
                    commasep(funarg, ")"),
                    poplex,
                    statement,
                    popcontext
                )
        }
        function funarg(type) {
            if (type == "spread") return cont(funarg)
            return pass(pattern, maybetype, maybedefault)
        }
        function className(type, value) {
            if (type == "variable") {
                register(value)
                return cont(classNameAfter)
            }
        }
        function classNameAfter(type, value) {
            if (value == "extends") return cont(expression, classNameAfter)
            if (type == "{") return cont(pushlex("}"), classBody, poplex)
        }
        function classBody(type, value) {
            if (type == "variable" || cx.style == "keyword") {
                if (value == "static") {
                    cx.marked = "keyword"
                    return cont(classBody)
                }
                cx.marked = "property"
                if (value == "get" || value == "set")
                    return cont(classGetterSetter, functiondef, classBody)
                return cont(functiondef, classBody)
            }
            if (value == "*") {
                cx.marked = "keyword"
                return cont(classBody)
            }
            if (type == ";") return cont(classBody)
            if (type == "}") return cont()
        }
        function classGetterSetter(type) {
            if (type != "variable") return pass()
            cx.marked = "property"
            return cont()
        }
        function afterModule(type, value) {
            if (type == "string") return cont(statement)
            if (type == "variable") {
                register(value)
                return cont(maybeFrom)
            }
        }
        function afterExport(_type, value) {
            if (value == "*") {
                cx.marked = "keyword"
                return cont(maybeFrom, expect(";"))
            }
            if (value == "default") {
                cx.marked = "keyword"
                return cont(expression, expect(";"))
            }
            return pass(statement)
        }
        function afterImport(type) {
            if (type == "string") return cont()
            return pass(importSpec, maybeFrom)
        }
        function importSpec(type, value) {
            if (type == "{") return contCommasep(importSpec, "}")
            if (type == "variable") register(value)
            if (value == "*") cx.marked = "keyword"
            return cont(maybeAs)
        }
        function maybeAs(_type, value) {
            if (value == "as") {
                cx.marked = "keyword"
                return cont(importSpec)
            }
        }
        function maybeFrom(_type, value) {
            if (value == "from") {
                cx.marked = "keyword"
                return cont(expression)
            }
        }
        function arrayLiteral(type) {
            if (type == "]") return cont()
            return pass(expressionNoComma, maybeArrayComprehension)
        }
        function maybeArrayComprehension(type) {
            if (type == "for") return pass(comprehension, expect("]"))
            if (type == ",") return cont(commasep(maybeexpressionNoComma, "]"))
            return pass(commasep(expressionNoComma, "]"))
        }
        function comprehension(type) {
            if (type == "for") return cont(forspec, comprehension)
            if (type == "if") return cont(expression, comprehension)
        }

        function isContinuedStatement(state, textAfter) {
            return (
                state.lastType == "operator" ||
                state.lastType == "," ||
                isOperatorChar.test(textAfter.charAt(0)) ||
                /[,.]/.test(textAfter.charAt(0))
            )
        }

        // Interface

        return {
            startState: function(basecolumn) {
                var state = {
                    tokenize: tokenBase,
                    lastType: "sof",
                    cc: [],
                    lexical: new JSLexical((basecolumn || 0) - indentUnit, 0, "block", false),
                    localVars: parserConfig.localVars,
                    context: parserConfig.localVars && { vars: parserConfig.localVars },
                    indented: 0
                }
                if (parserConfig.globalVars && typeof parserConfig.globalVars == "object")
                    state.globalVars = parserConfig.globalVars
                return state
            },

            token: function(stream, state) {
                if (stream.sol()) {
                    if (!state.lexical.hasOwnProperty("align")) state.lexical.align = false
                    state.indented = stream.indentation()
                    findFatArrow(stream, state)
                }
                if (state.tokenize != tokenComment && stream.eatSpace()) return null
                var style = state.tokenize(stream, state)
                if (type == "comment") return style
                state.lastType =
                    type == "operator" && (content == "++" || content == "--") ? "incdec" : type
                return parseJS(state, style, type, content, stream)
            },

            indent: function(state, textAfter) {
                if (state.tokenize == tokenComment) return CodeMirror.Pass
                if (state.tokenize != tokenBase) return 0
                var firstChar = textAfter && textAfter.charAt(0),
                    lexical = state.lexical
                // Kludge to prevent 'maybelse' from blocking lexical scope pops
                if (!/^\s*else\b/.test(textAfter))
                    for (var i = state.cc.length - 1; i >= 0; --i) {
                        var c = state.cc[i]
                        if (c == poplex) lexical = lexical.prev
                        else if (c != maybeelse) break
                    }
                if (lexical.type == "stat" && firstChar == "}") lexical = lexical.prev
                if (statementIndent && lexical.type == ")" && lexical.prev.type == "stat")
                    lexical = lexical.prev
                var type = lexical.type,
                    closing = firstChar == type

                if (type == "vardef")
                    return (
                        lexical.indented +
                        (state.lastType == "operator" || state.lastType == ","
                            ? lexical.info + 1
                            : 0)
                    )
                else if (type == "form" && firstChar == "{") return lexical.indented
                else if (type == "form") return lexical.indented + indentUnit
                else if (type == "stat")
                    return (
                        lexical.indented +
                        (isContinuedStatement(state, textAfter) ? statementIndent || indentUnit : 0)
                    )
                else if (
                    lexical.info == "switch" &&
                    !closing &&
                    parserConfig.doubleIndentSwitch != false
                )
                    return (
                        lexical.indented +
                        (/^(?:case|default)\b/.test(textAfter) ? indentUnit : 2 * indentUnit)
                    )
                else if (lexical.align) return lexical.column + (closing ? 0 : 1)
                else return lexical.indented + (closing ? 0 : indentUnit)
            },

            electricInput: /^\s*(?:case .*?:|default:|\{|\})$/,
            blockCommentStart: jsonMode ? null : "/*",
            blockCommentEnd: jsonMode ? null : "*/",
            lineComment: jsonMode ? null : "//",
            fold: "brace",
            closeBrackets: "()[]{}''\"\"``",

            helperType: jsonMode ? "json" : "javascript",
            jsonldMode: jsonldMode,
            jsonMode: jsonMode
        }
    })

    CodeMirror.registerHelper("wordChars", "javascript", /[\w$]/)

    CodeMirror.defineMIME("text/javascript", "javascript")
    CodeMirror.defineMIME("text/ecmascript", "javascript")
    CodeMirror.defineMIME("application/javascript", "javascript")
    CodeMirror.defineMIME("application/x-javascript", "javascript")
    CodeMirror.defineMIME("application/ecmascript", "javascript")
    CodeMirror.defineMIME("application/json", { name: "javascript", json: true })
    CodeMirror.defineMIME("application/x-json", { name: "javascript", json: true })
    CodeMirror.defineMIME("application/ld+json", { name: "javascript", jsonld: true })
    CodeMirror.defineMIME("text/typescript", { name: "javascript", typescript: true })
    CodeMirror.defineMIME("application/typescript", { name: "javascript", typescript: true })
})
